Respuesta :

B  9 units

C = πd ( where d is the diameter )

here r = 1.5 ⇒ d = 2 × 1.5 = 3

as an estimate, approximate π to 3

C = 3 × 3 = 9 ← is the best estimate

Answer:

Circumference is 9 units.

Step-by-step explanation:

According to the formula of circumference

Circumference = [tex]2\pi\times (radius of circle)[/tex]

Given, Radius i.e.   r = 1.5 units

  Circumference  = [tex]2\times\frac{22}{7} \times 1.5[/tex]

                             = [tex]\frac{660}{70}[/tex]

                             = 9.43 units

Therefore, the best estimate of the circumference of this circle is 9 units.

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